Used in immunological research to quantify levels of Human Leukocyte Immunoglobulin-like Receptor Subfamily A Member 3 (LILRA3) in biological samples such as serum, plasma, or cell culture supernatants. This ELISA kit enables researchers to study the role of LILRA3 in immune regulation, inflammation, and autoimmune diseases. It is particularly useful in clinical research settings investigating conditions like rheumatoid arthritis, multiple sclerosis, and systemic lupus erythematosus, where LILRA3 expression may be altered. The assay provides a sensitive and specific method to monitor protein expression, supporting biomarker discovery and evaluation of therapeutic responses in immune-related disorders.